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THE CHICAGO ACADEMY OF SCIENCES. 
GEOLOGICAL RANGE (Figure 20): Pleistocene. The geological! 
range of capcrata 1s not as extensive, judged by the records, as is its 
recent range. The records are sufficiently numerous, however, to indi- 
cate a wide extension in the Upper Mississippian and Canadian regions. 
None of the records are preglacial. It is a characteristic Lcess fossil 
owing to its peculiar habitat. Further Leess researches will doubtless 
largely extend the range herein indicated. 
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LOESS. 
IowA: Fremont and Mills Counties, Iowa, in bluffs bordering the Missouri 
River (Call) ; Loess of Iowa (Keyes; Shimek) ; Leess of Iowa City, Johnson Co. 
(McGee, smaller than living form; Shimek); Bluff above Hershey Avenue, 
Muscatine, Muscatine Co.; Division; St. Davenport, Scott Co., near base of 
Leess (Leverett; Shimek; Udden); 2% miles north-east of Minden, Pottawat- 
tamie Co.; Nebraska City, Fremont Co., and Sioux City, Woodbury Co.; Scott 
and Johnson Counties (Shimek). 
InpIANA: New Harmony, Posey Co. (Daniels; Weller.) 
NEBRASKA: Lancaster Co. (Shimek). 
SAND AND GRAVEL DEPOSITS. 
ILLINOIS: Sand banks along Lake Michigan shore, north of Graceland 
Avenue, Chicago (Jensen). 
CANADA: Sand and gravel pits near Niagara Falls (Bell; Can. Geol. 
Surv.). 
